sorry for the late reply, i'm down at eastbourne stringing the event there.

babolats are generally a little more powerful. the pure drive is a very popular, intermediate kind of racket, with a slight emphasis on power. the aero pro drive is similar but a little more control oriented. or, on the more classic side of things is the pure storm, which has a traditional beam shape and more of an emphasis on feel and control, while still providing decent power. the aero storm is similar, just with the aero beam shape, which gives a touch more power